Okay so recently I started hearing what I can only describe as chatter noise when in overdrive and fluid is warm. If I turn OD off it goes away and sounds fine. When I give it gas in OD, it gets louder and if I take my foot off the gas It quiets down.

I cant find much talk about this sound but I did find a youtube video that has the same sound.

Im okay with a rebuild if I need to but since I cant get a toyota rebuilt anymore id like to find a good trustworthy shop if needed.

I will hear it a brief second some times when it shifts from 1st to second, but gone as soo as its in gear.

This is a 2002 with 270k miles

2000 4runner Transmission noise. - YouTube


Ill add I live out by Death Valley so vegas would be the place I look for a shop or the LA area

Nothing...

Okay lets ask another question, I read everyone says the planetary gears in the 2001-2002 go bad. Anyone know what this actully sounds like and what happends when this happens? do they break apart , do you loose gears?

About 5 yrs ago my '01 began making a whining sound in 1 and 2 very little in 3. I changed the entire fluid and filter - sounds diminish for about 2 yrs

Then very rapidly one day as I drove about 60 miles thru hill country sometimes turn OD off and back on on hill climbs and decents I noticed a high pitch whine in OD. Within about 40 more miles it began making what sounded like marble sounds bouncing around inside the trans - this would only last a few seconds but it really was telling me to park it.

I drove it to a friend's (mechanic) house knowing this was near the end - at stop lights it locked up once or twice when those marble sounds (probably chunks of the OD gear or bushings disintegrating) - I would start it back up and it would drive OK shifting as usual. It sat there for 6 months while Yota One built me a knew one - a good core will save you about $400 Mine was no good - the TC would not even slide off anymore once we unattached it from engine - it was toast - lasted 337K - maybe even longer if I had changed the fluid more often - twice I waited over 100k - my bad. It was very good despite.

They sell one out the door for about $2700 but of course shipping to Texas cost a chunk more so if you can go get it or take your unit there would be best - they are located in Riverbank CA. The rebuilt one is superb - works silently - shifts firm - and it even gained the truck 2 mpgs - stronger acceleration and feels overall better. Luck.

Yota1 Performance Engine & Machine - Your Toyota needs all in one place!

Thanks for the detailed info. Maybe ill go that route,im not too far from there. I jsut sent them an email asking for a quote and turn around time.



I called a random tranny shop in vegas. They said $3400 to rebuild + $1000( to remove old one and reinstall). Said its a about a week to finish it.

@calimobber : FWIW I tried and tried to get a quote in writing via email from Yota1 and the nice, possibly overworked at the time, woman running the business end of the shop just couldn't get it together. I would definitely pay them a visit to get a firm quote and see if they have a core in stock. At the time I inquired a year or more ago, they didn't have any cores to build or ATs ready to ship. In fact they were going to rebuild mine and offered to R & R it at a good price. Coincidentally, I noticed today that some Toyota parts departments have Reman 'CA' 4X4 ATs for 2000s in stock and 'on sale'.......

2000 Toyota 4Runner Transmission 35010-3G040-84 | Toyota Parts Center

Edit - sorry, I thought you had a 2000 when I read your post, but I don't think that matters. Actually, when I changed vehicles to 2002 it says Discontinued....

Something tells me the Yota1 Performance unit would be better, but who knows.